Gentoo's Bugzilla –
Attachment 367042 Details for
Bug 497100lxde-base/lxsession with sys-devel/automake-1.14.1 - lxsession/Makefile.am:46: warning: source file '../lxsettings-daemon/settings-daemon.c' is in a subdirectory, but option 'subdir-objects' is disabled